The act of Double Fisting a Girl. Named the Short bus for multiple reasons, one being it would take a girl who is retarded to allow you to do it to her. The other you are putting 10 in here slightly more than the minivan which only seats seven.
I met this diry hooker who let me drive the short bus right up in her. The next day I had to take her back to the state home.
Typically the pimp name for a 4' 2" absolute unit. May be shorter then your local soap dispenser, but will not hesitate to destroy friends faces and not remember. Prone to violence if denied a high five.
He/she was making another lame, unoriginal attempt to embarrass the Irish dude about his short dick syndrome, even though the guy had already been aware of his short dick before it was brought to his attention. When was he/she going to come up with something other than the same kind of exhausted, dull insult the guy had not already heard thousands of times, said by thousands of people.